Improvement in car-axle boxes



H. H. HILL & G M. SABGENT.

Car-Axle Boxes.

No. 141,350, Patentedluly 29,1873.

' WWW $56 9.

izwum- NITED STATES PATENT CFFICE.

HENRY H. HILL AND GEORGE M. SARGENT, OF MOLINE, ILLINOIS.

IMPROVEMENT IN CAR-AXLE BOXE S.

Specification forming part'of Letters Patent No. 141,350, dated July 29,1873; application filed April 23, 1873.

To all whom it may concern:

Be it known that we, HENRY H. HILL and GEo. M. SARGENT, of Moline, inthe county of Rock Island and State of Illinois, have invented certainImprovements in J ournal-Boxes, of which the following is aspecification:

Our invention relates to journal-boxes, more especially those used incars; and the invention consists in constructing the box of amalleable-iron shell, and then fitting therein a brass or othersoft-metal lining in such a manner that when it is worn it can beremoved and another substituted, all as hereinafter more fullyexplained.

Figure l is a perspective view of the shell and lining detached. Fig. 2is a transverse section of the box, showing a modification. Inconstructing journal-boxes for railway cars it is found that brasslinings are preferable to Babbitt metal, heretofore used; and it is alsoknown that brass linings, when much heated by friction, become brittle,and are apt to break. In order to render these boxes sufficiently strongto bear the great weight placed upon them the cast-iron shellsheretofore used have had to be made very heavy, thereby requiring moremetal, and rendering them heavy and also expensive; and when the brasslining is cast in or on the brass shell both had to be thrown away orreplaced by new ones as soon as the brass became worn or injured, thusadding greatly to the expense of keeping the cars in running order.

To remedy these difficulties is the object of our present invention, andto do this we proceed as follows: 7

'We first make a shell, A, for the journalbox, of malleable iron, which,being much stronger than ordinary cast-iron heretofore used for thispurpose, can be made correspondingly lighter. This shell A is made of aform, externally, to fit it to'the frame in which it is held when inplace, and has its interior face Inadeconcave or semicircular, as shownin the drawings. At each end it has a recess, f, formed in its concaveface, said recess bein g preferably made shallower near each edge, asshown in Fig. 1. It also has a rectangular notch, h, formed in each end,at the center, as represented in the same figure. Having thus providedthe shell A, we next cast a brass lining, B, to fit within the shell,the lining, as completed, being shown in Fig. 1. This lining, which isto constitute the bearing or wearing surface for the journal, has formedon its ends a flange, b, to fit in the recess f, and also with ashoulder or projection, c, to fit in the notch h of the shell. \Vhenthus completed, the lining B will fit accurately within the shell A, thetwo having a bearing over their adjoining surfaces, so that the liningwill be firmly supported at all points by the shell A, thus obviatingthe danger of its being fractured or broken by the great weight orpressure upon it, although made comparatively very light.

It is obvious that, instead of the recesses and notches at the ends ofthe shell, and the corresponding flanges and shoulders on the lining,other means may be used to accomplish the same result. For instance, theshell may be made with one or more holes through or in it, asrepresented in Fig. 2, the lining having formed on its convex sidecorresponding studs to fit therein, and thus hold the lining in place inthe shell.

By this mode of constructing journal-boxes it will be seen that thelining, when worn, and which in railway cars occurs in a short time, canbe removed, and new ones substituted with but trifling expense or delay,and that the entire box can be made much lighter than by the ordinarymethods.

The malleable-iron shell will last for a long time, and will answer fora great number of linings, while the Worn brasses can be remelted, andused over and over again.

It is obvious that these boxes can be used for other journals, also, andthat the lining may be made of other metal than brass in cases whereother metal will answer the desired purpose. For the special purpose,however, for which these boxes are designed, we prefer to use brasslinings.

lining, B, all constructed and arranged to operate as described,'wherebywe are enabled to use a light shell and replace the lining at will, asset forth.

HENRY H. HILL. GEORGE M. SARGENT.

Witnesses LUCIAN ADAMS, CHAS. M. HILL.

